Almost all traders and investors use stock charts.
Whether it’s an intraday chart or multi-year chart, stock charts place today’s price in context. Within seconds, they give us information about the market’s sentiment towards a stock, the short-term and long-term trend, and supply and demand.

While everyone uses charts, not all uses are equal. A Warren Buffett-style value investor will only use a chart to gauge the market sentiment, aka, does the market like or dislike this stock?
Traders, on the other hand, use stock charts to make the majority of their trading decisions. They use charts to identify and take advantage of supply and demand imbalances as well as for timing trades.